# Oil-Gas Properties — Oil&Gas Properties > Calculates physical properties for crude oil, natural gas, and other liquids. (iPhone/iPad app by Bjarne Berge.) - Source: https://appshunter.io/ios/app/oil-gas-properties/id1484250850 (this page in markdown: same URL + `.md`) - Developer: [Bjarne Berge](https://appshunter.io/developer/1209858941) - Category: Productivity, Utilities - Price: $0.99 - Rating: 1.00/5 from 1 App Store ratings · 1 written reviews indexed - Age rating: 17+ - Requires: iOS 15.6 · 1 MB - Languages: American English - Released: 2019-10-28 - Data updated: 2026-06-03 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/oil-gas-properties/id1484250850/reviews.md ## What is Oil? Oil-Gas Properties calculates physical properties for Crude Oil and other liquids (Water, Methanol (MeOH) and Glycols (MEG, DEG and TEG) and Natural Gas, Air and Nitrogen. Liquid properties: - API gravity (Crude Oil only) - Molecular weight - Density - Viscosity - Thermal compressibility - Thermal conductivity - Specific heat capacity - Surface tension - Bubble point pressure - Solution Gas-Oil-Ratio (oil and water) - Formation Volume Factor (oil and water) - Pseudo Critical properties - Pseudo Reduced properties For crude oil the user can select different empirical correlations for density, viscosity, formation volume factor (which also determines method for calculating bubble point pressure and solution gas-oil ratio) and surface tension. For water, different options are available for calculating solution-gas-water ratio, water viscosity and formation volume factor water. Gas properties: - Compressibility factor (Z-factor - gas deviation factor) - Molecular weight - Density - Viscosity - Thermal compressibility - Thermal conductivity - Specific heat capacity - Ideal heat capacity ratio, Cp/Cv - Real isentropic coefficient, k - Gas formation volume factor (natural gas only) - Pseudo Critical properties - Pseudo Reduced properties For natural gas the choice of method for calculating Z-factor (compressibility factor) also determines method for calculating isothermal compressibility, formation volume factor, specific heat capacity and isentropic coefficient (ideal and real). For air and nitrogen the Redlich-Kwong equation of state is used. ## Key features - Calculates properties for crude oil, natural gas, and liquids - Supports density, viscosity, thermal conductivity, and more - Offers multiple empirical correlations for crude oil - Provides options for water property calculations - Calculates gas compressibility factor (Z-factor) - Includes pseudo critical and reduced properties ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/oil-gas-properties/id1484250850/reviews.md ### 1/5 — Colors messed up *2019-12-20* Can see anything on screen on iOS 13. Colors messed up. ## Frequently asked questions about Oil ### What liquids can Oil-Gas Properties calculate properties for? Oil-Gas Properties can calculate properties for Crude Oil, Water, Methanol (MeOH), and Glycols (MEG, DEG, TEG). It also handles Natural Gas, Air, and Nitrogen. ### Does Oil-Gas Properties offer different calculation methods? Yes, for crude oil, users can select different empirical correlations for density, viscosity, formation volume factor, and surface tension. Similar options are available for water property calculations. ### What gas properties can Oil-Gas Properties calculate? For gases, it calculates the compressibility factor (Z-factor), molecular weight, density, viscosity, thermal compressibility, thermal conductivity, specific heat capacity, and more. The choice of Z-factor calculation method influences other gas properties. ### What devices is Oil-Gas Properties available on? Oil-Gas Properties is available on iPhone and iPad devices. It is not currently supported on iPod. ### How often is Oil-Gas Properties updated? The latest version of Oil-Gas Properties is 4.0, last updated on March 12, 2026. This indicates a recent update, suggesting ongoing development and maintenance. ### What is the age rating for Oil-Gas Properties? Oil-Gas Properties has an age rating of 17+. This is likely due to the technical nature of the content and its target audience. ### What is the price of Oil-Gas Properties? Oil-Gas Properties is a paid application, priced at $0.99. This one-time purchase grants access to all its features. ### Does Oil-Gas Properties have ads? No, Oil-Gas Properties does not contain advertisements. As a paid application, it offers an ad-free experience for users. ## Version history (last 4 releases) ### 4.0 — 2026-03-12 Updated with Xcode 26. Bug fixes. ### 3.0 — 2020-09-02 Updated for IOS 13 Added 'Share' button for sharing, printing and saving results Changed Color-scheme to enable Dark Mode Minor bug-fixes ### 2 — 2020-05-18 Previous version only covered physical property calculations of gases (Natural Gas, Air and Nitrogen). Updated version now also includes PVT-calculations for liquids (Crude Oil, Water, Methanol (MeOH), Mono-ethylene Glycol (MEG), Di-ethylene Glycol (DEG) and Tri-ethylene Glycol (DEG)). ### 1.0 — 2019-10-28 No release notes. ## More apps by Bjarne Berge - [Gas-Liquid Leak](https://appshunter.io/ios/app/gas-liquid-leak/id1209858942) - [AGA-3 Orifice](https://appshunter.io/ios/app/aga-3-orifice/id1350504597) - [ISO-5167](https://appshunter.io/ios/app/iso-5167/id1356345079) - [Gas-Liquid RO](https://appshunter.io/ios/app/gas-liquid-ro/id1374664837) - [Line-Fit](https://appshunter.io/ios/app/line-fit/id1448053643) - [Curve-Fit](https://appshunter.io/ios/app/curve-fit/id1450077815) All apps by Bjarne Berge: https://appshunter.io/developer/1209858941 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-03.*